Adam Clarke on Psalms 22:7

Laugh me to scorn - They utterly despised me; set me at naught; treated me with the utmost contempt. Laugh to scorn is so completely antiquated that it should be no longer used; derided, despised, treated with contempt, are much more expressive and are still in common use.

They shoot out the lip, they shake the head - This is applied by St. Matthew, to the conduct of the Jews towards our Lord, when he hung upon the cross; as is also the following verse. But both are primarily true of the insults which David suffered from Shimei and others during the rebellion of Absalom; and, as the cases were so similar, the evangelist thought proper to express a similar conduct to Jesus Christ by the same expressions. These insults our Lord literally received, no doubt David received the same.